CN203163748U - A sensor signal processing circuit - Google Patents
A sensor signal processing circuit Download PDFInfo
- Publication number
- CN203163748U CN203163748U CN 201320166865 CN201320166865U CN203163748U CN 203163748 U CN203163748 U CN 203163748U CN 201320166865 CN201320166865 CN 201320166865 CN 201320166865 U CN201320166865 U CN 201320166865U CN 203163748 U CN203163748 U CN 203163748U
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- signal processing
- processing circuit
- sensor
- comparer
- resistance
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Abstract
The utility model discloses a sensor signal processing circuit comprising a fixed resistor, a comparator, and a single chip microcomputer. One input end of the comparator is used for being connected with the output end of a sensor. The output end of the comparator is connected with the single chip microcomputer. The sensor signal processing circuit also comprises multiple reference resistors and a single-pole multi-throw switch. The number of the selecting end of the single-pole multi-throw switch is the same as that of the reference resistors. One ends of the multiple reference resistors are all connected with a power supply, while the other ends of the multiple reference resistors are connected with a corresponding selecting end of the single-pole multi-throw switch, respectively. The common end of the single-pole multi-throw switch is connected with the other end of the comparator and one end of the fixed resistor. The other end of the fixed resistor is connected with ground. The sensor signal processing circuit is easy to manipulate and has high measuring accuracy.
Description
Technical field
The utility model relates to a kind of signal processing circuit.
Background technology
The moment sensor kind is numerous, can be used for the data of different types sensing, after sensor senses data, needs to handle through signal, just can obtain required data.The existing sensors signal processing circuit as shown in Figure 1, comprise comparer, adjustable resistance Rx, fixed resistance R and single-chip microcomputer, the output terminal of described sensor connects an input end of comparer, one end of described adjustable resistance connects power supply VCC, the other end is via fixed resistance ground connection, and another input end of comparer is connected between adjustable resistance and the fixed resistance; The output terminal of described comparer connects single-chip microcomputer.After sensor detects corresponding data, the signal of output correspondence is a comparing data of device as a comparison, and adjustable resistance and the fixed resistance dividing potential drop data reference data of device as a comparison, described comparer compares the back to the single-chip microcomputer output signal with aforementioned data, and single-chip microcomputer is handled the back output signal in order to show or the action of control performer with described signal.
But, because the kind of sensor is numerous, the kind difference of sensor, the data difference that detects, as voltage data, temperature data etc., when different types of sensor sense data was handled, the resistance of adjustable resistance was different, when changing the sensor that connects, need ceaselessly regulate the resistance of adjustable resistance, bother very much, and the change in resistance of adjustable resistance be difficult to accurate assurance, thereby the reduction measuring accuracy haves much room for improvement.
The utility model content
The purpose of this utility model is to provide a kind of sensor signal processing circuit, and it is easy to operate, and the measuring accuracy height.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of sensor signal processing circuit comprises fixed resistance, comparer and single-chip microcomputer, and an input end of described comparer is used for connecting the output terminal of sensor, and the output terminal of comparer connects single-chip microcomputer; Also comprise several reference resistances and single pole multiple throw, the selecting side quantity of described single pole multiple throw is identical with the quantity of reference resistance, one end of several reference resistances all is connected to power supply, the selecting side of the other end and single pole multiple throw connects one to one, and the common port of single pole multiple throw connects another input end of comparer and an end of fixed resistance respectively, the other end ground connection of described fixed resistance.
After adopting such scheme, the utility model is by arranging a plurality of reference resistances, the corresponding different types of sensor of difference, when connecting sensor, only needing will be to the selecting side closure of single pole multiple throw that should the sensor kind, operation is very easy like this, and the resistance of reference resistance is very accurate, and final deal with data is also just very accurate.
Description of drawings
Fig. 1 is the circuit diagram of existing sensor signal processing circuit;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model and beneficial effect are elaborated.
As shown in Figure 2, the utility model provides a kind of sensor signal processing circuit, comprises fixed resistance R0, comparer and single-chip microcomputer, and an input end of described comparer is used for connecting the output terminal of sensor, and the output terminal of comparer connects single-chip microcomputer; Identical with existing structure herein, repeat no more.
Improvement of the present utility model is: also comprise n reference resistance R1 ..., Rn and single pole multiple throw, the selecting side quantity of described single pole multiple throw is identical with the quantity of reference resistance, one end of several reference resistances all is connected to power supply VCC, the selecting side of the other end and single pole multiple throw connects one to one, and the common port of single pole multiple throw connects another input end of comparer and an end of fixed resistance respectively, the other end ground connection of described fixed resistance.
During work, the resistance of each reference resistance is all through calculating test in advance, the corresponding different types of sensor of different resistances, when connecting the sensor of a certain kind, only need to determine the corresponding reference resistance of this kind sensor, the selecting side closure of the single pole multiple throw that it is corresponding, do not need as regulating adjustable resistance in the available circuit, it is very convenient to operate, and the resistance of reference resistance is that determine, accurate, makes that final deal with data degree of accuracy is very high.And after the closure of a certain selecting side of single pole multiple throw, data handling procedure of the present utility model is identical with the available circuit structure, does not repeat them here.
Above embodiment only is explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every according to the technological thought that the utility model proposes, as to do on the technical scheme basis any change all falls within the utility model protection domain.
Claims (1)
1. a sensor signal processing circuit comprises fixed resistance, comparer and single-chip microcomputer, and an input end of described comparer is used for connecting the output terminal of sensor, and the output terminal of comparer connects single-chip microcomputer; It is characterized in that: also comprise several reference resistances and single pole multiple throw, the selecting side quantity of described single pole multiple throw is identical with the quantity of reference resistance, one end of several reference resistances all is connected to power supply, the selecting side of the other end and single pole multiple throw connects one to one, and the common port of single pole multiple throw connects another input end of comparer and an end of fixed resistance respectively, the other end ground connection of described fixed resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166865 CN203163748U (en) | 2013-04-07 | 2013-04-07 | A sensor signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166865 CN203163748U (en) | 2013-04-07 | 2013-04-07 | A sensor signal processing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163748U true CN203163748U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320166865 Expired - Fee Related CN203163748U (en) | 2013-04-07 | 2013-04-07 | A sensor signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217178A (en) * | 2013-04-07 | 2013-07-24 | 无锡市崇安区科技创业服务中心 | Sensor signal processing circuit |
-
2013
- 2013-04-07 CN CN 201320166865 patent/CN203163748U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217178A (en) * | 2013-04-07 | 2013-07-24 | 无锡市崇安区科技创业服务中心 | Sensor signal processing circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140407 |